Closure



N. LEE

CLOSURE Filed De. s. 1925 Dec. 28 1926.

" INVENTOR Nap/v EE 4Y ATTORNEY Patented Dec. 2a, 1926.

NIXON LEE, OF BROOKLYN, NEW YORK.

CLOSURE.

Applicationfiled December 3, 1923. Serial No. 678,164.

My invention relates to closures used fol sealing the openings incontainers, jars or bottles in which the closure is adapted to berepeatedly applied to and removed from the container, and furthermore totightly seal the container when the closure is aflixed and locked insealing position, even after repeated applications and removals.

My improved closure construction is particularly 7 adapted for use withbottles or jars having separated or divided spiral threads lying on theouter surface of the neck to coact with bent-in locking projectionsformed in the depending skirt or flange of the closure cap.

The primary object of my invention is, among other things, to provide animproved closure of this type whereby the closure cap may beeconomically strengthened or reinforced, while the bent-in lockingprojections are formed in the skirt in different planes relatively tothe crown of the cap, and preferably of difierent sizes or lengths, tocoact With respectively different sections of the divided spiral threador threads formed on the bottle neck, such sections being relativelyspaced-apart from each other to allow for the downward passage of theparticular locking projections before the closure is rotated and lockedin position. Futhermore by this improved structure with such coactionbetween the engaging parts of the closure cap and bottle neck pitches ofsmall amount relative to the thickness of the threads may be obtained.Such slight pitches do not prevent a firm and secure locking action andtake care of liner or gasket shrinkage, while the degree of pitch ofsuch a divided spiral thread may be brought much nearer the horizontalthan in that type of closures or caps having punched-in portionsengaging separated and multiple spiral threads which lie substantiallyin mutal parallelism with one another on the outer surface of thebottleneck. Hence such a pitch plane may be even less than the width ofsuch spiral thread on the bottle neck, and it is of advantage to havethe pitch of such thread approach the horizontal not only to increasethe wedging action} betwieen the parts to secure a tight seal, but alsoto prevent the cap closure from being inadvertent-- l y rotated orbacked OK the container dur- 1n handling and transportation.

RVith the above and other objects in view,

my invention comprises the novel construction, combination andarrangement of parts to be hereinafter described and claimed.

In the drawings showing embodiments of my invention Fig. 1 is asectional elevation of the glass container and closurecap in lockedposition; Fig. 2 is a development, more or less diagrammatic in form, oftheclosure cap showing the relative location of the locking projectionsbent in from the depending skirt of the cap Fig. 3 1s a similardevelopment of the out-. er surface of the conta ner-neck showing theseparated or divided spiral therein; I

threads formed Fig. 4; is a sectional view taken on the line 4-4: ofFig. 1 showing the tions of the cap after the:

locking projeclatter has been turned to bring the projections invertical ahnement with the r respective openings or passages between thedifferent sections or portions of the spiral thread; and

Flg. 5 1s a sectional elevation, similar to Flg. 1, showing a modifiedform when a double set of l'OCklngPI'0]6Ct1OIlS and spiral threads areemployed.

Similar numerals refer to similar parts throughout the several figures.

Referring to the embochment shown in Figs. 1-4: inclusive,

the container 6, preferably formed of glass or other suitable material,is of any preferred shape,

and has formed immediately below the mouth opening 7 on the exteriorwalls of the neck 8 a spiral thread 9 shown to be formed of threespaced-apart sections or portions 10, 11 and 12 of substantially thesame length as illustrated in Fig. 3. A greater of spaced-apart sectionsof thread 9 may be employed or less number such separated to suit therequirements. The lower left-hand end of each section 10, 11 and 12 isformed with a vertical rib 13, 14: and 15 respectively to provide a stopand also to prevent the closure cap from being reversely rotated whenapplied to the containers as will hereafter be described.

The closure cap 16 is formed of sheet metal with the Hat top or crown 17and having the depending shallow flange or skirt 18, the lower edge ofwhich is bent over or curled outwardly to provide the annularreintoicing bead 19 to strengthen such flange or skirt 18. The skirt 18is provided with a plurality of bent-in locking projections 20, 21 and22, preferably of dinlerent sizes, and arranged in different planesrelatively to the crown 17 and above the bead 19 as shown in Fig. 2.Such projections 20,21 and 22 are designed to aline with, and passthrough, the passages or openings 23, 24 and 25 respectively, formedbetween the sections 10, 11 and 12, when brought into vertical alinementtherewith. If desired the projections 20, 21 and 22 may all be 01 thesame size and shape in which case the width of the passages or openings23, 24 and 25 will be equal. All that is required is that the relativepitc ies of the sections 10, 11 and 12 and the openings 23, 2 1 and 25shall be substantially the same as shown in Figs. 2 and 3.

In the modified form shown in Fig. 5, 1 have illustrated two sets ofsections 10, 11 and 12 forming double spiral threads 9 with twosuperposed locking projections 20, 21 and 22 to engage the under sidesof the thread sections 10, 11 and 12, as shown. Such Fig. 5 constructionwill give an exceptionally secure fastening because of increasedfrictional engagement between the coacting parts as well as to the lowpitch of the divided threads and interlocking projections.

The operation of my improved closure is substantially as follows: Thecap 16 is set on the container mouth 7 and rotated as indicated by thearrow in Fig. 1 until the projections 20, 21 and 22 register With theopenings 28, 2a and 25 respectively. This vertical alinement orregistering of the parts is readily obtained by rotation until eachprojection 20, 21 and 22 registers and drops through its particularopening 23, 2 1 and 25 as shown in Fig. 1. The ribs 13, 1a and 15prevent the cap 16 from being reversely rotated and cause eachprojection 20, 21 and 22 to move forwardly in frictional engagement withthe under shoulder or the thread sections 10, 11 and 12 as the cap 16 is111 ther rotated in a clockwise dir ction as shown in Fig. 4. The ribs13, 1 1 and 15 will also serve as a closure stop to prevent the cap 16from being rotated too far from any undue twisting.

It is manifest that my improved closure may be readily removed andafterwards replaced on the container 6 to attain re-sealing, and thatthe relativel low pitch or" the divided spiral threads and interlockingprojections from the cap skirt 18 produces an increased tightnessthrough wedging, resulting in a closure which will be strong and durableand sufiioiently rigid to withstand all the pressures and strainsfalling thereon and also preclude any looseness through reverse rotationof the cap.

1 claim as my invention:

1. In combination with a container having a divided thread on its neckformed of a number o1 lengthwise spaced-apart, spirally-eztendedsections of like pitch each separated by openings of difi'erent sizestherebetween, a closure having a like number of inturned lockingprojections of substantially like pitch and 01 different sizes each topass through its opening of like size torthereafter simultaneouslyengaging the under shoulders of its predetermined section upon rotationin one direction.

2. In combination with acontainer having a divided thread on its neckformed of a number or lengthwise spaced-apart, spirally-extendedsections of like pitch each separated by openings of progressivelyincreasing sizes there-between, a closure having a like number orinturned locking projections of substantially like pitch and ofprogressively increasing sizes each to pass through its opening of likesize for there after simultaneously engaging the under shoulders oi itspredetermined section upon rotation in one direction. I

3. In combination with a container having a divided thread on its neckformed of a number or lengthwise spaced-apart, spirally-extendedsections of like pitch each separated by openings of different sizesthere between, a closure having a like number of inturned lockingprojections of substantially like pitch and of different sizes each topass severally and simultaneously through its openings of like size forthereafter simultaneously engaging the under shoulders of itspredetermined section upon rotation in one direction.

l. In combination with a container having a divided thread on its neckformed of a number of lengthwise spaced-apart, spirally-extendedsections of like pitch each separated by openings of different sizesthere-between, a closure having a like number of inturned lockingprojections of sub stantially like pitch and of difierent sizes, each topass through its opening of like size for thereafter simultaneouslyengaging the under shoulders of its predetermined section upon rotationin one direction, and

a combined guide and stop on each section to prevent improper closurerotation in either direction after the several projections have passedthrough its respective opening between said sections.

5. in combination with a container having a divided thread on its neckformed of a number of lengthwise spaced-apart, spirally-extendedsections of like pitch each separated by openings of progressivelyincreasing sizes there-between, a closure havits predetermined sectionupon rotation in ing a like. number of inturned locking proonedirection, and a combined guide and jections of substantially like pitchand of stop on each section to prevent improper 10 progressivelyincreasing sizes each to pass closure rotation in either direction afterthe 5 severally and simultaneously through its several projections havepassed through its opening of like size for thereafter simulrespectiveopening between said sections.

taneously engaglng the under shoulders of NIXON LEE.

